复合益生菌制剂对肉鸡生长性能、屠宰性能和肌肉品质的影响

旨在研究不同比例的复合益生菌制剂对肉鸡的生长性能、屠宰性能和肌肉品质的影响。选择360羽体况良好、体重相近的50日龄广西灵山土鸡,随机分成3组,每组4个重复,每个重复30羽(公母各半)。对照组饲喂基础饲粮,试验组饲喂分别添加0.1%、0.2%的复合益生菌制剂的试验饲粮。正试期70 d。结果表明,与对照组比较,添加0.1%、0.2%的复合益生菌制剂均能够显著提高肉鸡的平均日增重和成活率(P0.05),显著降低料重比(P0.05);显著提高肉鸡的半净膛率和全净膛率(P0.05),显著降低腹脂率(P0.05);显著提高肉鸡胸肌肉的粗蛋白质、灰分和肌苷酸的含量(P0.05),显著降低胸肌肉的粗脂肪和胆固醇的含量(P0.05)。添加不同比例的复合益生菌制剂均能够显著提高肉鸡的生长性能、屠宰性能和肌肉品质,其中,以添加0.1%的综合效果最好。

Effects of Complex-probiotic-preparation on Growth Performance,Slaughter Performance and Meat Quality of Broiler

The aim was to study effects of different ratios of complex-probiotic-preparation on growth performance, slaughter performance and meat quality of broiler. 360 healthy and 50-day Guangxi Lingshan native chickens with similar body weight were chosen and divided into three groups, and each group had four repeats. Each repeat had 30 chickens （half cock and half hens）. Control group were fed with basal diet, while tested group were fed with tested diet within 0.1% and 0.2% complex-probiotic- preparation, respectively. The test lasted for 70 days. Results showed that, compared with control, adding 0.1% and 0.2% complex-probiotic-preparation could significantly improve average daily gain and survival rate of broiler （P〈0.05）, significantly decreased the ratio of feed to gain （P〈0.05）, significantly improve half net carcass rate and whole net carcass rate （P〈O.05）, significantly decreased percentage of abdominal fat （P〈0.05）, significantly improve crude protein, ash content and inosinic acid （P〈O.05）, and significantly decreased crude fat and cholesterol content of thoracic muscle （P〈0.05）. Therefore, adding different ratios of complex-probiotic-preparation could significantly improve the growth performance, slaughter performance and meat quality of broiler, among them adding 0.1% complex-probiotic-preparation had the best comprehensive effect.